you used to sleep like a champ. then boom, what happened? stress, fun, bad habits, kids, now what? let's build you a better bed that senses your movement, heartbeat, breathing. sensors working directly with the air chambers. it's the all-new sleep number x12 bed. it tracks your sleep and tells you here's a good, better and an awesome night. the difference? try adjusting up or down. you'll know cuz sleep iq™ tells you and all you have to do is sleep. only at a sleep number store, try the unprecedented sleep number x12 bed. know better sleep with sleep number.